PSChrome 4 ml Glass Screw Cap Autosampler Vials are graduated with a write-on patch and available in either clear or amber glass.
The seperate black polypropylene screw caps are knurled for excellent gripping and comfort, with a fitted septa manufactured from high grade red PTFE/white silicone.
Our screw top vials and screw caps are the perfect fit for HPLC and GC instrument platforms across a wide variety of applications, including pharmaceutical, environmental, energy and fuels, forensics, materials science, biopharmaceutical, proteomics, and metabolomics.